7
Diagnostics and Troubleshooting
Troubleshooting
Thermo Scientific
TSQ Quantum XLS and TSQ Quantum GC User Guide
137
• The sample analyte is adsorbing in the GC injector. Clean and deactivate the injection
liner. You can also try liners made of different materials.
• The GC oven is not ramped to a high enough temperature. Extend upper oven
temperature.
• The GC column must be replaced or does not have the appropriate stationary phase for
your application. Change the GC column. See
“Removing and Installing a GC Capillary
• The GC column does not extend far enough past the end of the transfer line tip. If the
end of the column is inside the tip, an excessive amount of GC effluent will contact the
inside wall of the tip. Follow the procedure described in
Issue:
Source heater
will not heat.
Possible causes/solutions
• No contact between the ion source temperature sensor and the heater block. For accurate
temperature readings of the heater block, fully screw the threaded standoff into the ion
source to ensure contact between the temperature sensor and the heater block. See
“Reassembling the L1, L2, L3 Lens Assembly”
.
• One or more heater cartridges on the EI/CI Source PCB is defective. Replace the EI/CI
Source PCB. See
“Disassembling and Reassembling the TSQ Quantum XLS Ion Source
(TSQ Quantum XLS), or
“Disassembling and Reassembling
the TSQ Quantum GC Ion Source Completely”
(TSQ Quantum GC).
• The ion source temperature sensor (RTD) is defective. Replace the EI/CI Source PCB.
“Disassembling and Reassembling the TSQ Quantum XLS Ion Source Completely”
(TSQ Quantum XLS), or
“Disassembling and Reassembling the TSQ
Quantum GC Ion Source Completely”
(TSQ Quantum GC).
Issue:
Source
heater overheats.
Possible cause/solution
• The ion source temperature sensor (RTD) is defective. Replace the EI/CI Source PCB if
necessary. See
“Disassembling and Reassembling the TSQ Quantum XLS Ion Source
(TSQ Quantum XLS), or
“Disassembling and Reassembling
the TSQ Quantum GC Ion Source Completely”
(TSQ Quantum GC).
Issue:
Transfer
line will not heat.
Possible causes/solutions
• Aux1 zone of the GC is not configured for MS Transfer Line. Configure Aux1 zone of the
GC and set transfer line temperature in the GC Method Editor.
• Transfer line heater elements are defective. Replace the transfer line.
• The transfer line temperature sensor (RTD) is defective. Replace the transfer line.